Variable cross-section pipe connecting structure

• Main Authors: YANG XIUKUN, PU LEI, TUO FENGPENG, JIA XIJING, XIE WEI
• Format: Patent
• Language: Chinese; English
• Published: 28.01.2022
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The utility model discloses a variable cross-section pipe connecting structure which comprises an air supply pipe, an air inlet pipe, an air outlet pipe and an air outlet pipe. Openings in the two ends of the variable-section pipe are different in area, the end with the large opening is a large pipe opening, the end with the small opening is a small pipe opening, the large pipe opening is matched with the air supply pipe, and the large pipe opening is communicated with the air supply pipe; the connecting pipe is matched with the small pipe opening, and the connecting pipe is communicated with the small pipe opening; an air outlet of the telescopic first fan is communicated with the variable cross-section pipe through a small connecting pipe; and an air outlet of the second fan is communicated with the side part of the connecting pipe through a pipeline. The device ensures that the total amount of fresh air fed into a basement is not changed or increased under the condition that the distance between the air pi